GENERAL DESCRIPTION OF THE AREA. 
15 
large number of boulders which occur have probably not been 
transported for any great distance. 
The rock formations in the county have contributed to a 
greater or less extent in the formation of the soils. By far the 
greater proportion of the material has come from crystalline 
rocks and from sandstone. Since these materials were first de¬ 
posited by the ice sheet they have been modified by running wa¬ 
ter, by the action of wind, by weathering and by accumulation 
Fig. 2. Sketch map showing the surface rock formations in Waupaca County. All of 
these formations have contributed to the making of the soils. 
and decay of vegetable matter. In the soil survey of Waupaca 
County the soils have, been classified into eight series and thirty- 
two types, not including peat. In several instances, phases of 
some of the types have been recognized. 
The soil series (which correspond to the family groups) are 
not shown on the soil map which accompanies this report, and 
are described here only very briefly. The individual soil types, 
however, are shown on the map, each being indicated by a dis¬ 
tinct color. It is the soil type in which we are especially inter¬ 
ested, since the type is the unit in mapping and classification 
of soils.. Following is a complete list of the soil types mapped 
in the county and the series or family groups to which each type 
